How to get all images for an image sequence? (from Python)
This function returns all the images which share the same prefix, suffix (and have a number suffix), eg:
/path/to/my_image_0001.png

def image_sequence_resolve_all(filepath):
    import os

    basedir, filename = os.path.split(filepath)
    filename_noext, ext = os.path.splitext(filename)

    from string import digits
    if isinstance(filepath, bytes):
        digits = digits.encode()
    filename_nodigits = filename_noext.rstrip(digits)

    if len(filename_nodigits) == len(filename_noext):
        # input isn't from a sequence
        return []

    return [
        f.path
        for f in os.scandir(basedir)
        if f.is_file() and
           f.name.startswith(filename_nodigits) and
           f.name.endswith(ext) and
           f.name[len(filename_nodigits):-len(ext) if ext else -1].isdigit()
    ]


# example use
print(resolve_image_sequence("/path/to/my_image_0001.png"))
&gt;&gt; ["/path/to/my_image_0001.png",
    "/path/to/my_image_0002.png",
    "/path/to/my_image_0003.png",
    ]